CN105198511B - A kind of multifunctional organic fertilizer and its preparation method and application using tannery sludge and wood fibre - Google Patents
A kind of multifunctional organic fertilizer and its preparation method and application using tannery sludge and wood fibre Download PDFInfo
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- CN105198511B CN105198511B CN201510596231.8A CN201510596231A CN105198511B CN 105198511 B CN105198511 B CN 105198511B CN 201510596231 A CN201510596231 A CN 201510596231A CN 105198511 B CN105198511 B CN 105198511B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
The invention discloses the multifunctional organic fertilizers and its preparation method and application of a kind of tannery sludge and wood fibre, the wood fibre that the organic fertilizer includes the leather-making mud that parts by weight are 100 parts and parts by weight are 300~800 parts, the Multifunctional organic fertilizer is containing mud and sewage using tannery as raw material, the sewage is flocculated, is precipitated, after plate-frame filtering or self-tipping type centrifuge are concentrated to give leather-making mud, then is mixed into after sector-style is dry or compost fermentation and is prepared with the wood fibre of crushing.Wood fibre of the present invention is preferably edible fungi residue, the present invention also optionally adds the molasses and phosphate of certain part by weight in material, it prepares alternative applied to the passivation of Some Mining Districts tailing, alkaline passivation, microorganism adsorption and the multifunctional organic fertilizer directly as landscape flower of attenuation and common contaminated soil in mining areas, the recycling for realizing leather-making mud and edible fungi residue the like waste, the effect of having reached useless pollution treatment.
Description
Technical field
The invention belongs to bio-organic fertilizer technical fields, are related to a kind of skill that the Treatment and recovery of tanning sewage utilizes
Art field, it is more particularly related to a kind of multifunctional organic fertilizer and its system using tannery sludge and wood fibre
Preparation Method and application.
Background technology
The rapid development of development of China leather industry has had resulted in serious environmental pollution, every year about 375000 t sludge at
For the long-standing problem of China process hides compact district headache.Leather-making mud（Tannery Sludge）It is tannery's treated sewage mistake
The sediment generated in journey, complicated component include not only washing sludge, and ingredient is with chloride, sulfide, phenols, the micro- life of bacterium
Based on object etc.；Rotten hair liming sludge, ingredient is based on sulfide, lime, protein, rotten hair slurry etc.；Also terminal sewage disposal
The minerals such as the chromium-bearing sludge of generation and a small amount of heavy metallic salt.
According to investigations, there are prodigious environment hidden danger for the present situation of China's leather-making mud processing：Current most of tanneries are direct
It fills or stacks together with house refuse using leather-making mud as common rubbish, do not carry out any stabilisation or harmless treatment,
Lead to the harmful components such as Cr in leather-making mud6+ 、S2 –Permeate earth's surface, polluted surface water and underground water；A small number of enterprises will be certainly
The leather-making mud of right desiccation mix with coal to be sent into boiler and burns, although burning can be eliminated thoroughly and largely harmful in leather-making mud be had
Machine object and pathogen (such as bacterium, virus, parasitic ovum), but contain a large amount of strong carcinogen Cr in the ash after incinerating6 +
With pernicious gas SO2, it cannot still be directly discharged in environment, recycling and after-treatment need to be carried out to these toxic ash contents, therefore,
The popularization and application of the processing method are still restricted；Untreated sludge is used as agricultural fertilizer by Ye You tanneries, it is known that system
It removes from office containing nutritional ingredient-nitrogenous fertilizer needed for a large amount of organic matter and plant in sludge, is valuable living resources, but no matter
Be by leather-making mud directly using or compost after reuse, still crome metal and multiple pathogens containing high-content in fertilizer
With organic pollution etc., potential threat can still be caused to human lives, and existing skill also lack leather-making mud is used as it is agricultural
The application effect of fertilizer is especially monitored and is assessed on the specific experiment that the environment of crops, soil influences.Therefore, it studies and builds
Effective leather-making mud processing method is found, the recycling of leather-making mud is especially realized, is leather industry sustainable development
One of severe challenge faced.The patent application of Publication No. CN1197778A disclose it is a kind of with process hides liming depilation waste liquor and
The method that sludge manufactures complex fertilizer, this method mainly by the acid adding into waste liquid and sludge or are passed through air and catalyst are added to urge
Changing oxidation reduces sulfur content to 10-3Mol/L carries out pollution processing, is then required according to compound fertilizer total nutrient content, at pollution
Chemistry fertilizer or other natural fertilizers are added in feed liquid after reason.But the patent technique is more complex, need to strictly control sour in reactive tank
Addition or air intake, require consersion unit high, and the mistake for the manganese sulfate catalysis oxidation sulphion being added in reacting
Cheng Zhong will produce irritation toxic gas hydrogen sulfide, seriously pollute environment, influence surrounding resident life, in addition, the catalysis being added
Agent is as feed liquid is processed into complex fertilizer such as manganese sulfate, and in application, being excessively used for catalyst is also possible to break
Bad soil environment.
Edible fungi residue is a kind of organic solid castoff, its main component is to be eaten the plant after bacterium mycelia utilizes
Residuum（Including cotton seed hulls, straw, wooden powder etc.）, it is extremely difficult to it degrades.The Demonstration Base of Edible Fungi or wast rural area, river
Stream is littoral, headland, and Around the house is seen everywhere edible fungi residue, and generated problem of environmental pollution is also very prominent.By
In edible fungi residue nitrogen content is small, nutritional ingredient is few, dissolubility is poor the features such as, at present mainly as fertilizer, animal feed,
It burns, arbitrarily the modes such as discarding are handled.For example, application No. is 201410062997.3 patent application disclose it is a kind of utilize city
The technique of city sludge production fertilizer, using municipal sludge, river bed sludge, pine bark clast, hay powder, Chinese medicine microorganism bacteria residue,
Flyash, which is that raw material is fermented, to be prepared.But since the Chinese medicine microorganism bacteria residue that the patent uses belongs to antibiotic agents,
It is usually inhibited to new fermentative microorganism, therefore composting fermentation process is slow, the fertilizer application which is prepared
In soil, antibiotic pollution is not only resulted in, can also destroy Ecological Distribution of Soil Microorganisms population structure, and contain weight in flyash
Metal ion and toxic ion, are applied to soil, can cause secondary pollution to soil.
Invention content
In view of at present both at home and abroad about tanning sewage disposition, processing and the money of Treatment and recovery method and edible fungi residue
The advantage and disadvantage that source utilizes, the purpose of the present invention is to provide a kind of tannery sludges and wood fibre to have for the multi-functional of raw material
Machine fertilizer and preparation method thereof, in addition, a further purpose of the present invention is to provide the application of multifunctional organic fertilizer obtained above, it is thorough
Realize the comprehensive utilization of two kinds of leather-making mud, edible mushroom waste residue wastes in bottom.
In order to realize that above-mentioned first purpose of the present invention, the present inventor are studied by a large number of experiments and constantly explored, most
Following technical solution is obtained eventually：
A kind of multifunctional organic fertilizer using tannery sludge and wood fibre, the organic fertilizer include that parts by weight are 100
The wood fibre that the leather-making mud and parts by weight of part are 300~800 parts, the Multifunctional organic fertilizer are to contain sludge with tannery
Sewage is raw material, and the sewage is flocculated, is precipitated, plate-frame filtering or is concentrated to give leather-making mud by self-tipping type centrifuge
Afterwards, it then is mixed into after sector-style is dry or compost fermentation and is prepared with the wood fibre of crushing, wherein the wood fibre is edible
Any one of bacterium bacteria residue or the residual branch of ornamental trees and shrubs, sawdust are several；Tannery's sewage is in leather production
The tanning sewage without chromic salts processing in sewage, rotten hair liming sewage and other tanning production techniques is washed, the washing is dirty
The main component of mud is chloride, sulfide, phenols, bacterial micro-organism, and the rotten hair liming sludge main component is vulcanization
Object, lime, protein, rotten hair slurry.
Further, the wood fibre described in above-mentioned technical proposal is preferably edible fungi residue.
Further, the specific preparation method of Multifunctional organic fertilizer described above includes the following steps：
（1）Using pending tanning sewage as raw material, the tanning sewage is flocculated, is precipitated, plate-frame filtering or logical
The concentration of self-tipping type centrifuge is crossed, obtains the concentration leather-making mud that water content is 85~90%, the tanning sewage is not carry out chrome tanning
Be not added with manganese sulfate contain mud and sewage；
（2）By step（1）The obtained concentration leather-making mud, the parts by weight edible fungi residue and meanwhile be added to powder
It in broken machine, is uniformly mixed while by crushing material, it is 100~200 mesh to make the edible fungi residue fineness after the crushing, then
The material crushed and after mixing is directly spread out into cloth or ventilation process 1~2 day through plane again, whole process does not carry out at any fermentation
Reason makes sulphur in the leather-making mud exist always with sulphion state, when water content is 18~25% to get to described more
Functional organic fertilizer.
Further, edible fungi residue described in above-mentioned technical proposal is preferably 300~600 parts.
The above-mentioned Multifunctional organic fertilizer being prepared can be used as passivation attenuation agent and use, and can be directly used for Some Mining Districts tail
The passivation of mine, attenuation treatment realize the tailing growing plant that not even a blade of grass grows, achieve the purpose that reclaim.
Therefore, described blunt a further purpose of the present invention is to provide a kind of passivation attenuation agent for Some Mining Districts tailing
It is the multifunctional organic fertilizer described above being prepared to change attenuation agent.
Further, the Multifunctional organic fertilizer described in above-mentioned technical proposal further includes phosphate, molasses, wherein
By weight, the phosphate is 5~7 parts, molasses are 20~40 parts, and the Multifunctional organic fertilizer is made with the following method
It is standby to form, include the following steps：
（1）Using pending tanning sewage as raw material, the sewage is flocculated, is precipitated, plate-frame filtering or self-tipping type
Centrifuge concentration after, obtain water content be 85~90% thickened sludge, the tanning sewage be tannery's production process in into
Contain mud and sewage before row chrome tanning process and without manganese sulfate processing；
（2）By step（1）The obtained thickened sludge, the edible fungi residue of the parts by weight, molasses, phosphate are simultaneously
It is added in pulverizer, crushes and after mixing, after so that material ventilation process is fermented 3~8 days, material stink disappears, and has
A large amount of mycelia, which generate, sulphion is substantially all in material is converted into elemental sulfur, to get to described when water content reaches 18~25%
Multifunctional organic fertilizer.
Step in above-mentioned technical proposal（1）The leather-making mud has strong and stimulating stink.
Further, edible fungi residue described in above-mentioned technical proposal is preferably 300~600 parts, and the phosphate is preferred
For biphosphate sylvite, synthesized for nucleic acid, the addition of the biphosphate sylvite is preferably 5 parts.
Further, the flocculant described in above-mentioned technical proposal is polyacrylamide.
Due to the Multifunctional organic fertilizer being prepared using the above method, the sulphion in odorless and material passes through
Redox biology enzyme effect caused by fermentation process is fully converted into for elemental sulfur or microprotein combination
The sulfur-containing amino acid such as sulphur, i.e. disulfide bond or cysteine, it can be seen that, the potential risk which pollutes without sulphion,
Namely sulphion will not be made to pollute water proximate because of rainy elution（It can lead to the inorganic ions of fish and shrimp quick death,
Produced hydrogen sulfide is toxic）, which can be directly applied to landscape flower plantation.
Therefore, a further purpose of the present invention is to provide a kind of organic fertilizer for landscape flower plantation, the organic fertilizer
For the multifunctional organic fertilizer described above being prepared.
Alternatively, Multifunctional organic fertilizer described above can also be prepared with the following method, the method packet
Include following steps：
（1）Pending tanning sewage is flocculated, is precipitated, plate-frame filtering or is concentrated by self-tipping type centrifuge, is obtained
To water content be 85~90% thickened sludge, the tanning sewage be chrome tanning, addition manganese sulfate before, and non-pickling contain stone
The strong basicity tanning sewage of ash, vulcanized sodium；
（2）By the parts by weight respectively by step（1）The obtained thickened sludge, edible fungi residue, molasses, phosphate
It is added in pulverizer simultaneously, after being uniformly mixed, mixed material is passed through into quick ventilation process 1~2 hour, whole process
Not carrying out any fermentation process makes sulphur in the leather-making mud exist always with sulphion state, reach water content be 15~
To get to the multifunctional organic fertilizer when 20%.
Further, edible fungi residue described in above-mentioned technical proposal is preferably 500~800 parts, and the phosphate is preferred
For biphosphate sylvite, step（2）The fineness of the material after crushed is 200~300 mesh.
The Multifunctional organic fertilizer described above being prepared, the alkalinity that may be directly applied to common contaminated soil in mining areas are blunt
Change, microorganism adsorption.
Therefore, a further purpose of the present invention is to provide a kind of alkaline passivation agent for common pollution mining area, the alkali
Property passivator be the multifunctional organic fertilizer described above being prepared.
It is emphasized that the present invention using tannery sludge prepare the technique of multifunctional organic fertilizer with it is in the prior art
Municipal sludge, river bed sludge（Or mud）Etc. there is essential distinction, the raw material that uses, preparation method, is made fermenting mechanism
Organic fertilizer formula it is different, therefore the resource utilization process such as municipal sludge disclosed in the prior art or river bed sludge are not
It is suitble to present invention processing leather-making mud, cannot achieve the bioconversion of sulphion.Leather-making mud of the present invention mainly handles or resource
Change processing and the Utilizing question for being sulphion using difficulty, leather-making mud of the present invention contains amino acid, peptides, fermenting speed
Soon, the period is short, and fertilizer efficiency, the application range of the organic fertilizer of preparation are different from other organic fertilizers in the prior art.Master of the present invention
The wood fibre or other raw materials of leather-making mud and crushing are mixed into after sector-style is dry or compost fermentation and are prepared：Compost is sent out
Ferment mainly makes sulphion be reduced to elemental sulfur or microprotein combination sulphur using biological oxidation-reduction（Disulfide bond or half
The sulfur-containing amino acid such as cystine）, obtained organic fertilizer may be directly applied to landscape flower plantation after fermented, the organic fertilizer without
Sulphion pollutes, and alleviates the harm to environment；When directly air-dry and the multifunctional organic fertilizer for preparing without everfermentation mainly
Be using sulphion contained in organic fertilizer to contaminated soil in mining areas heavy metal ion in conjunction with and be attenuated or be passivated and realize blunt
Change and repair or reclaim, may be directly applied to alkaline passivation, the microorganism adsorption of common contaminated soil in mining areas.
Compared with prior art, the present invention has following advantageous effect：
（1）The method of the present invention is that tannery's sewage is carried out segment processing, i.e., all sewage before handling chromic salts are preferential
Concentration, by the sewage without chromic salts by self-tipping type centrifuge or plate and frame filter press concentration after, become water content be 85~
Then 90% sludge carries out independent resource utilization, the amount of chromium-bearing sludge is made to reduce to 1% or so, greatly reduce containing chromium dirt
Mud is seriously polluted caused by environment；
（2）Multifunctional organic fertilizer nitrogen content prepared by the method for the present invention is high（6% or so）, sulfur-containing anion it is higher and crush
The porous feature of bacteria residue, therefore seriously broken no matter the multifunctional organic fertilizer of the present invention is applied in forest land, garden greenland or earth's surface
On the soil that the needs such as bad block are reclaimed, soil characteristic can be improved, increases soil nutrient, the life of ground flora can not only be promoted
It is long, it may additionally facilitate microbial populations in soil number of structures and increase considerably, effectively improve ecological environment, turn waste into wealth, favorably
In sustainable development；
（3）Since the multifunctional organic fertilizer being prepared using the method for the present invention contains S2-Ion, S2-Ion and heavy metal
Ions binding makes heavy metal ion be converted into metal sulfide precipitation and reduce pollution of the heavy metal ion to water source around；Together
When, the wooden bacteria residue of crushing has porosity characteristic, it may have adsorbs the performance of heavy metal ion, and wood substance component, leather egg
White wait can also bind directly to form indissoluble sediment with heavy metal ion containing groups such as carboxyl, sulfydryls, further reduce weight
Pollution of the metal ion to water source around, therefore multifunctional organic fertilizer produced by the present invention can not only be directly applied to forest land, garden
Woods greenery patches is alternatively arranged as passivation attenuation agent and is applied to pollution mining area, for example, the tailing mining area that not even a blade of grass grows, is realized with pollution treatment of giving up
The effect of.
（4）The remaining nutrient that the method for the present invention had both been effectively treated leather-making mud, has been also fully utilized by edible mushroom waste residue, it is dirty
The utilization rate of mud and bacteria residue is high, and environmental protection is practical, opened up a new way for the recycling of leather-making mud.
（5）Present invention process process is simple, and technological parameter is easy to control, large-scale production easy to implement, and low energy consumption, system
Standby multifunctional organic fertilizer added value is high, remarkable in economical benefits.
Specific implementation mode
Technical scheme of the present invention is described in detail below by specific embodiment.
Embodiment 1
A kind of preparation method using tannery sludge and the multifunctional organic fertilizer of wood fibre is prepared with the following method
It forms, described method includes following steps：
（1）With the same day tanning sewage containing sludge before chrome tanning and before addition manganese sulfate（The sewage odorless）For raw material, to
Polyacrylamide flocculant is added in the sewage, the tanning sewage is flocculated, is precipitated, plate-frame filtering or self-tipping type
Centrifuge concentrates, and obtains the concentration leather-making mud that water content is 85~90%；
（2）By 100kg steps（1）The obtained concentration leather-making mud, 400kg edible fungi residues while being added to crushing
In machine, reach uniformly mixed while by crushing material, it is 100~200 mesh, powder to make the edible fungi residue fineness after the crushing
Without carrying out fermentation process, to protect, sulfur-bearing spreads out cloth or ventilation process to material after broken and mixing as sulphion state, then through plane
After 1.5 days, the multifunctional organic fertilizer that water content is 18~25% is obtained.
The multifunctional organic fertilizer being prepared described in above-described embodiment may be directly applied to mining area, make the tailing that not even a blade of grass grows
Reach growing plant, realizes purpose of reclaiming.
The multifunctional organic fertilizer being prepared described in above-described embodiment, edible fungi residue content are few（Edible fungi residue and system
The weight ratio for removing from office sludge is 4:1）, sulfite ion concentration is high, by this multifunctional organic fertilizer with 0.5kg/m2Ratio be applied to and contain
The tailing dam region of 300mg/kg Available Cu ions（Not even a blade of grass grows in the region, without any microorganism）, by 20 days or more
Passivation Treatment（Sulphion is combined into copper sulfide with copper ion or cuprous sulfide precipitates）, the content of the Available Cu ion in tailing
It will reduce within 30mg/kg, and reach the contents level of normal soil Available Cu ion.After effective copper content is restored normal
Soil for planting economic crops, such as the rape of Cruciferae or large-scale oil plant industrial crops lacquer tree（Generate raw lacquer palpus
With the presence of copper ion）, well-grown（Demonstration builds on Hubei University）, realize that tannery sludge and the multi-functional of wood fibre have
The application of machine fertilizer the passivation reparation of mining area tailing or is reclaimed.
Embodiment 2
A kind of preparation method using tannery sludge and the multifunctional organic fertilizer of wood fibre is prepared with the following method
It forms, described method includes following steps：
（1）With before chrome tanning and addition manganese sulfate before the same day or more days tanning sewages（The sewage has strong and stimulating smelly
Taste）For raw material, polyacrylamide flocculant is added into the sewage, the sewage is flocculated, is precipitated, plate-frame filtering
Or after the concentration of self-tipping type centrifuge, the thickened sludge that water content is 85~90% is obtained；
（2）By 100kg steps（1）Edible fungi residue, 30kg molasses described in the obtained thickened sludge, 300kg,
5kg biphosphates sylvite is added in pulverizer simultaneously, crush and after mixing, it is necessary to make material ventilation process fermentation 5 days
Afterwards, material stink disappears, and sulphion is substantially all in material is converted into elemental sulfur, and has a large amount of mycelia generations, water content to reach
To get to the Multifunctional organic fertilizer of no the sulphion pollution and odorless when 18~25%.
The multifunctional organic fertilizer being prepared described in above-described embodiment can be directly used as landscape flower plantation, be a kind of no sulphur
The multifunctional organic fertilizer of ionic soil and odorless.
The multifunctional organic fertilizer being prepared described in above-described embodiment is applied to the orchids such as side slope, mountain valley（Orchid etc.）Kind
Phytyl, according to 02~0.6kg/m2Ratio apply the multifunctional organic fertilizer, after 7~10 days, the growth of flower nutrition body is prosperous
It contains, pattern is bright-coloured, the florescence is long.After applying the multifunctional organic fertilizer, the Tiny ecosystem population structure quantity in soil increases, this
Slightly biological protein or peptides by the organic fertilizer decomposes, and promotes flower plant growth.In addition, having since this is multi-functional
Sulphion in machine fertilizer has been converted into elemental sulfur or albumen sulphur, encounters the rainwater also loss without sulphion, to water source around also without
Pollution.The plantation of other landscape flower plants is similar with said program and effect.
Embodiment 3
A kind of multifunctional organic fertilizer using tannery sludge and wood fibre is prepared with the following method, described
Method includes the following steps：
（1）Before chrome tanning, addition manganese sulfate, and the tanning sewage of the relatively strong basicity of the limy of non-pickling, vulcanized sodium
For raw material, polyacrylamide flocculant is added into the sewage, the sewage is flocculated, is precipitated, plate-frame filtering or
Self-tipping type centrifuge concentrates, and obtains the thickened sludge that water content is 85~90%；
（2）By 100kg steps（1）The obtained thickened sludge, 700kg edible fungi residues, 35kg molasses, 5kg phosphoric acid
Dihydro sylvite, while being added in pulverizer, is uniformly mixed, make the edible fungi residue fineness after the crushing be 200~
Mixed material is passed through quick ventilation process 2 hours by 300 mesh, and whole process, which does not carry out any fermentation process, keeps the process hides dirty
Sulphur in mud exist always with sulphion state to get be 15~20% to the water content, more work(that pH is 10.5~11.5
It can organic fertilizer.
Carbohydrate, phosphate described in the Multifunctional organic fertilizer that the embodiment obtains not yet are fermented Institute of Micro-biology's utilization,
In the raw, its purpose is to make molasses and phosphate promote the quick breeding of indigenous microorganism, indigenous microorganism
Quickly the protein fast decoupled in leather-making mud can be achieved in breeding, so that microorganism itself utilizes and is gradually converted into plant
Nitrogen utilizes, and promotes the fast-growth of plant.In addition, the breeding of indigenous microorganism itself also needs a large amount of nitrogens, these nitrogen
Element is mainly to be obtained by the decomposition of sludge protein, converts the nitrogen in sludge to microorganism oneself protein matter, and micro- life
Object has combination with soil colloid, plays effect nitrogenous in solidification sludge indirectly, mitigates nitrogen discharge in sludge and causes
Pollution of area source.
The weight ratio of edible fungi residue and leather-making mud is 7 in multifunctional organic fertilizer obtained above:1, it is light in being suitable for
Spend heavy metal ion contaminated soil.
Above-mentioned multifunctional organic fertilizer is applied in the intermediate pollution soil for being 5mg/kg or so containing effective cadmium content, is applied
It is 0.3~0.4kg/m to add ratio2, by processing in 15~30 days, sulphion was combined into sediment with cadmium ion and is passivated, together
When due to this multifunctional organic fertilizer be alkalinity, can cause cadmium ion be converted into hydroxide state be then decomposed into oxidation state precipitation, with
And the combination of the groups such as sulfydryl, carboxyl of the cell wall and metabolin of microorganism, can make effective cadmium of mild or moderate contaminated soil from
Son is reduced to arm's length standard 0.9mg/kg hereinafter, institute's long-term cropping content of beary metal is up to standard.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of multifunctional organic fertilizer using tannery sludge and wood fibre, it is characterised in that：The organic fertilizer includes weight
The leather-making mud that part is 100 parts and the wood fibre that parts by weight are 300~800 parts are measured, the Multifunctional organic fertilizer is to make
It is raw material that factory, which is removed from office, containing mud and sewage, and the sewage is flocculated, is precipitated, plate-frame filtering or is concentrated to give by self-tipping type centrifuge
To after leather-making mud, then it is mixed into the wood fibre of crushing that sector-style is dry to be prepared, wherein the wood fibre is edible mushroom
Bacteria residue；Washing sewage, rotten hair liming sewage and other tanning productions of tannery's sewage in leather production
The main component of tanning sewage without chromic salts processing in technique, the washing sludge is chloride, sulfide, phenols, bacterium
Microorganism, the rotten hair liming sludge main component are sulfide, lime, protein, rotten hair slurry.
2. the multifunctional organic fertilizer according to claim 1 using tannery sludge and wood fibre, it is characterised in that：Institute
The specific preparation method for stating Multifunctional organic fertilizer includes the following steps：
（1）Using pending tanning sewage as raw material, the tanning sewage is flocculated, is precipitated, plate-frame filtering or by from
The concentration of formula centrifuge is unloaded, the concentration leather-making mud that water content is 85~90% is obtained, the tanning sewage is not carry out chrome tanning and not
That adds manganese sulfate contains mud and sewage；
（2）By step（1）The obtained concentration leather-making mud, the parts by weight edible fungi residue and meanwhile be added to pulverizer
In, it is uniformly mixed while by crushing material, it is 100~200 mesh to make the edible fungi residue fineness after the crushing, then again will
It crushes and the material after mixing directly spreads out cloth or ventilation process 1~2 day through plane, whole process, which does not carry out any fermentation process, to be made
Sulphur in the leather-making mud exists with sulphion state always, when water content is 18~25% to get to described multi-functional
Organic fertilizer.
3. the multifunctional organic fertilizer according to claim 1 or 2 using tannery sludge and wood fibre, feature exists
In：The edible fungi residue is 300~600 parts.
4. the multifunctional organic fertilizer according to claim 1 using tannery sludge and wood fibre, it is characterised in that：It states
Multifunctional organic fertilizer can also be prepared with the following method, and described method includes following steps：
（1）Pending tanning sewage is flocculated, is precipitated, plate-frame filtering or is concentrated by self-tipping type centrifuge, is contained
The thickened sludge that water is 85~90%, the tanning sewage is chrome tanning, before addition manganese sulfate, and the limy of non-pickling, sulphur
Change the strong basicity tanning sewage of sodium；
（2）By the parts by weight respectively by step（1）The obtained thickened sludge, edible fungi residue, molasses, phosphate are simultaneously
Be added in pulverizer, after being uniformly mixed, by mixed material by quick ventilation process 1~2 hour, whole process not into
Any fermentation process of row makes the sulphur in the leather-making mud exist always with sulphion state, when to reach water content be 15~20%,
Obtain the multifunctional organic fertilizer.
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| CN108607531A (en) * | 2018-05-15 | 2018-10-02 | 北京林业大学 | Using dry branches and fallen leaves as the method for sludge heavy-metal adsorbent |
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